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Finding the Fourth Proportional to 5,713.50, 7,884.63 and 3,229.50

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Solution

The fourth proportional to 5,713.50, 7,884.63 and 3,229.50 is: 4,456.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,713.50 : 7,884.63 = 3,229.50 : x
  2. Step 2: Convert to fraction form
    5,713.50/7,884.63 = 3,229.50/x
  3. Step 3: Cross multiply
    5,713.50x = 7,884.63 × 3,229.50
  4. Step 4: Simplify right side
    5,713.50x = 25,463,412.59
  5. Step 5: Solve for x
    x = 25,463,412.59/5,713.50
  6. Step 6: Final answer
    x = 4,456.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.